Cutter sheath



FIG. 1 is a front perspective view of a cutter sheath, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view thereof shown in a position of use.

The broken lines are provided for environmental purposes only and form no part of the claimed design. 

CLAIM I claim the ornamental design for a cutter sheath, as shown and described. 